/* * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.colorchooser; import javax.swing.*; import javax.swing.border.*; import javax.swing.event.*; import javax.swing.text.*; import java.awt.*; import java.awt.image.*; import java.awt.event.*; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.Serializable; import sun.swing.SwingUtilities2; /** * The standard preview panel for the color chooser. *

* Warning: * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans™ * has been added to the java.beans package. * Please see {@link java.beans.XMLEncoder}. * * @author Steve Wilson * @see JColorChooser */ @SuppressWarnings("serial") // Same-version serialization only class DefaultPreviewPanel extends JPanel { private int squareSize = 25; private int squareGap = 5; private int innerGap = 5; private int textGap = 5; private Font font = new Font(Font.DIALOG, Font.PLAIN, 12); private String sampleText; private int swatchWidth = 50; private Color oldColor = null; private JColorChooser getColorChooser() { return (JColorChooser)SwingUtilities.getAncestorOfClass( JColorChooser.class, this); } public Dimension getPreferredSize() { JComponent host = getColorChooser(); if (host == null) { host = this; } FontMetrics fm = host.getFontMetrics(getFont()); int height = fm.getHeight(); int width = SwingUtilities2.getTextUIDrawing(host) .getStringWidth(host, fm, getSampleText()); int y = height*3 + textGap*3; int x = squareSize * 3 + squareGap*2 + swatchWidth + width + textGap*3; return new Dimension( x,y ); } public void paintComponent(Graphics g) { if (oldColor == null) oldColor = getForeground(); g.setColor(getBackground()); g.fillRect(0,0,getWidth(),getHeight()); if (this.getComponentOrientation().isLeftToRight()) { int squareWidth = paintSquares(g, 0); int textWidth = paintText(g, squareWidth); paintSwatch(g, squareWidth + textWidth); } else { int swatchWidth = paintSwatch(g, 0); int textWidth = paintText(g, swatchWidth); paintSquares(g , swatchWidth + textWidth); } } private int paintSwatch(Graphics g, int offsetX) { int swatchX = offsetX; g.setColor(oldColor); g.fillRect(swatchX, 0, swatchWidth, (squareSize) + (squareGap/2)); g.setColor(getForeground()); g.fillRect(swatchX, (squareSize) + (squareGap/2), swatchWidth, (squareSize) + (squareGap/2) ); return (swatchX+swatchWidth); } private int paintText(Graphics g, int offsetX) { g.setFont(getFont()); JComponent host = getColorChooser(); if (host == null) { host = this; } FontMetrics fm = SwingUtilities2.getFontMetrics(host, g); int ascent = fm.getAscent(); int height = fm.getHeight(); int width = SwingUtilities2.getTextUIDrawing(host) .getStringWidth(host, fm, getSampleText()); int textXOffset = offsetX + textGap; Color color = getForeground(); g.setColor(color); SwingUtilities2.getTextUIDrawing(host) .drawString(host, g, getSampleText(),textXOffset+(textGap/2), ascent+2); g.fillRect(textXOffset, ( height) + textGap, width + (textGap), height +2); g.setColor(Color.black); SwingUtilities2.getTextUIDrawing(host) .drawString(host, g, getSampleText(), textXOffset+(textGap/2), height+ascent+textGap+2); g.setColor(Color.white); g.fillRect(textXOffset, ( height + textGap) * 2, width + (textGap), height +2); g.setColor(color); SwingUtilities2.getTextUIDrawing(host) .drawString(host, g, getSampleText(), textXOffset+(textGap/2), ((height+textGap) * 2)+ascent+2); return width + textGap*3; } private int paintSquares(Graphics g, int offsetX) { int squareXOffset = offsetX; Color color = getForeground(); g.setColor(Color.white); g.fillRect(squareXOffset,0,squareSize,squareSize); g.setColor(color); g.fillRect(squareXOffset+innerGap, innerGap, squareSize - (innerGap*2), squareSize - (innerGap*2)); g.setColor(Color.white); g.fillRect(squareXOffset+innerGap*2, innerGap*2, squareSize - (innerGap*4), squareSize - (innerGap*4)); g.setColor(color); g.fillRect(squareXOffset,squareSize+squareGap,squareSize,squareSize); g.translate(squareSize+squareGap, 0); g.setColor(Color.black); g.fillRect(squareXOffset,0,squareSize,squareSize); g.setColor(color); g.fillRect(squareXOffset+innerGap, innerGap, squareSize - (innerGap*2), squareSize - (innerGap*2)); g.setColor(Color.white); g.fillRect(squareXOffset+innerGap*2, innerGap*2, squareSize - (innerGap*4), squareSize - (innerGap*4)); g.translate(-(squareSize+squareGap), 0); g.translate(squareSize+squareGap, squareSize+squareGap); g.setColor(Color.white); g.fillRect(squareXOffset,0,squareSize,squareSize); g.setColor(color); g.fillRect(squareXOffset+innerGap, innerGap, squareSize - (innerGap*2), squareSize - (innerGap*2)); g.translate(-(squareSize+squareGap), -(squareSize+squareGap)); g.translate((squareSize+squareGap)*2, 0); g.setColor(Color.white); g.fillRect(squareXOffset,0,squareSize,squareSize); g.setColor(color); g.fillRect(squareXOffset+innerGap, innerGap, squareSize - (innerGap*2), squareSize - (innerGap*2)); g.setColor(Color.black); g.fillRect(squareXOffset+innerGap*2, innerGap*2, squareSize - (innerGap*4), squareSize - (innerGap*4)); g.translate(-((squareSize+squareGap)*2), 0); g.translate((squareSize+squareGap)*2, (squareSize+squareGap)); g.setColor(Color.black); g.fillRect(squareXOffset,0,squareSize,squareSize); g.setColor(color); g.fillRect(squareXOffset+innerGap, innerGap, squareSize - (innerGap*2), squareSize - (innerGap*2)); g.translate(-((squareSize+squareGap)*2), -(squareSize+squareGap)); return (squareSize*3+squareGap*2); } private String getSampleText() { if (this.sampleText == null) { this.sampleText = UIManager.getString("ColorChooser.sampleText", getLocale()); } return this.sampleText; } }